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FORMERLY USED DEFENSE SITE INSTALLATION ID: CA99799FA07800

NAVAL AUXILIARY AIR STATION

holtville, California

Cost So Far

$3.03M

Money already spent on the evaluation and cleanup of hazardous sites.

Expected Additional Cost

$7.84M

The estimated amount of money needed for evaluation and cleanup of hazardous sites at this installation.

Expected Completion Date

2052

The date by which the DOD estimates cleanup of all sites will be complete. Long term monitoring may continue after this date.

The Naval Auxiliary Air Station is located in Imperial County, California, approximately 6 miles east of the Town of Holtville. In 1943, the Department of Interior granted permission, through Letters of authorization (dated 19 February 1943, 5... see more » The Naval Auxiliary Air Station is located in Imperial County, California, approximately 6 miles east of the Town of Holtville. In 1943, the Department of Interior granted permission, through Letters of authorization (dated 19 February 1943, 5 July 1943, and 19 October 1943), to the U.S. Navy to use 2080 acres of public land near Holtville, California. According to the Declaration of Surplus, dated 27 October 1947, the Navy actually used only 1248.99 acres. The Navy reduced the station to caretaker status in April 1946 and declared it surplus on 10 June 1946. Of the 1248.99 acres, 278.30 acres were transferred to the County of Imperial via quitclaim on 21 January 1949, for use as a hospital, and 791.76 acres were transferred to the County of Imperial via quitclaim on 21 January 1949, for use as an airport. The remaining 178.93 acres remained in the possession of the U.S. Department of Interior. The Department of Interior still holds ownership to this remaining portion of land. Currently, 91.66 acres of the original 278.30 acre parcel are privately owned with no specific use, and the balance, 186.64 acres, is owned by the County of Imperial as part of the Holtville Outlying Field. The 791.76-acre parcel is owned by the County of Imperial as part of the Holtville Outlying Field. The Field gets very little use and is not maintained by the County. Remaining DoD improvements that are beneficially used include the runway and taxiways. The water treatment and sewage disposal systems are currently non-operative but were beneficially used in conjunction with a tuberculosis hospital the County operated at one time. The Naval Auxiliary Air Station is located in Imperial County, California, approximately 6 miles east of Holtville. (Source: U.S. Army Corps of Engineers) « see less

2 Hazardous Sites

Below are the locations of hazardous sites associated with this military installation, according to the DOD. A site’s contamination may affect a much larger area, including public and private lands and the water supplies beneath them.

High Risk

Medium Risk

Low Risk

Risk Not Evaluated or Not Required

Response Complete

We haven't independently confirmed the location of every site. If you notice a site placed at the incorrect location, please contact us.

Not all sites in the DOD data include location information, so there may be sites listed below that are missing from the map. The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

2 Active Sites

Sites where military cleanup actions are still ongoing. The risk level of a site refers to a relative risk assessment made by the DOD, which prioritizes the cleanup of sites that pose greatest threat to safety, human health, and the environment.

Site ID: 02OEW

ZEROING IN BUTT AND SMALL ARMS RANGES

Multi Use Range

Cost

$6.19M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2052

This site is under ongoing monitoring until Sep 2085

Contaminated Areas

Soil: High Risk

Contaminants: 2,4-Dinitrotoluene 0.011 mg/kg Fluorene 0.17 mg/kg 2-Methylnaphthalene 0.31 mg/kg Nitroglycerine 0.36 mg/kg Acenaphthene 0.81 mg/kg Naphthalene 0.94 mg/kg Anthracene 2.3 mg/kg Antimony 3.5 mg/kg Dibenz[a,h]anthracene 8.1 mg/kg Indeno(1,2,3-cd)pyrene 23.0 mg/kg Benzo(a)pyrene 36.0 mg/kg Chrysene 45.0 mg/kg Pyrene 46.0 mg/kg Fluoranthene 54.0 mg/kg Benzo[b]fluoranthene 69.0 mg/kg Benzo(k)fluoranthene 69.0 mg/kg Strontium 1000.0 mg/kg Zinc 1400.0 mg/kg Lead 3200.0 mg/kg Aluminum 7900.0 mg/kg Copper 16000.0 mg/kg

See more details...

Site ID: 01CON/HTRW

NAVAL AUXILIARY AIR STATION - FUEL FARM

Underground Storage Tanks

Cost

$2.34M

Cost in 2015 plus expected future cost of cleanup

Final Cleanup Action

Sep 2017

Update (Dec. 5, 2017): We have changed the source of the installation cost data after being notified by the Department of Defense that they erroneously reported their own cost figures on the DERP website. We are now displaying the costs the department says are the most accurate available, from the Pentagon’s DERP database that we received in a FOIA request.

Note: The risk level of a site refers to a relative risk assessment made by the DOD to prioritize the cleanup of sites.

Data: All data comes from the Defense Environmental Restoration Program and the U.S. Army Corps of Engineers, and will be released soon at the ProPublica Data Store. Read our methodology »